baber/WOPTO huggingface dataset:
Patent GB-722417-A (GB)
Title: Improvements relating to the insulation of the windings of dynamo electric machines
Inventor: JOHNSON ERIC MAURICE
IPC: H02K3/32
Filed: 1951-06-20
Abstract: 722,417. Insulation for dynamo-electric machines. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 8, 1952 [June 20, 1951; Oct. 29, 1951], Nos. 14656/51 and 25252/51. Class 35. A dynamo-electric machine has its windings insulated from the core by rigid self-supporting homogenous or solid vitreous material in the form of flat sheets inserted between formed coils and the core. Fig. 1 shows a salient pole core having a number of vitreous plates 3 inserted between the pole core and pole coil 2. In order to avoid electrical " creepage " over the edges at the junctions of the sheets 3 the pole core may be cut away as at 5 and at 6. The sheets 3 may be arranged to project through insulating washers 7 located at the tops and bottoms of the coils 2 as in Figs. 2, 4, 6 (not shown). In Fig. 3 the coil 2 is made slightly oversize so that thin steel liners 8 may be inserted between the vitreous sheets 3 and the pole core. To facilitate dismantling, recesses 9 may be provided in the pole into which perforated lugs or tags 10 formed on or in the metal sheets 8 may be bent so as to be hooked and withdrawn when required. When the sheets 8 are used, it would be unnecessary to cut away the pole to avoid creepage because the separating space between the edges of the steel sheets 8 may be filled by flat strips 11 and moulded angles 12 made of suitable heat resisting and insulating material. In addition, the space between the edges of sheets 3 are filled with glass fabric. The upper edges of the vitreous sheets 3 are protected from damage by centrifugal force by putting solder in recesses 14 and to prevent slackness of the sheets 3 recesses are formed in the rotor body and filled with woven glass, &c. Also flat springs may be used to prevent slackness of the sheets 3 due to differential heat expansion. Specification 624,228 is referred to.
Patent GB-1384483-A (GB)
Title: Percussive photoflash lamp array with selective actuating mechanism
IPC: G03B15/04
Filed: 1973-03-27
Abstract: 1384483 Photo-flash assembly GTE SYLVANIA Inc 27 March 1973 [9 June 1972] 14743/73 Heading G2X A photo-flash assembly comprises a row of percussively-ignitable flash-lamps (31)-(38) and a plurality of pre-stressed strikers (41)-(48) mounted on a base 12, the strikers being individually releasable to fire a corresponding flashlamp, a longitudinally extending guide member arranged adjacent and generally parallel to the row of flash-lamps, and a slide member arranged for sliding movement along the guide for selective co-operation with the strikers, the guide member being movable to release by way of the slide member, a striker selected in accordance with the position of the slide member along the guide member. The invention also relates to a mechanism used in the assembly for selectively firing the flash-lamps. The firing mechanism may be integral with the camera or it may be insertable in a flash-cube socket (26). As shown, the firing mechanism comprises a slide member 80 which is mounted in a pivoted channel member 78 and is biased for right to left movement therein. Initially a latch 16 engages an arm 74 on end striker (41). On actuating of a camera member 24, channel member 78 is pivoted upwards so that plate 112 releases arm 74 which fires flash-lamp 31 and allows the slide member to move in the channel until latch 116 contacts the arm 74 of the next striker. Slots 106, 108, 110 prevent the strikers in the non-operative position being fired; in the operative position plate 112 covers the respective slot. In order to fire two bulbs simultaneously plate 112 is moved by lever 124 so that it covers two slots simultaneously.
Patent GB-189066-A (GB)
Title: Improvements in spark catchers for locomotives
IPC: F23J15/02
Filed: 1922-05-25
Abstract: 189,066. Schlottner, V. May 25, 1922. Draught, regulating; baffles.-A spark arrester for locomotive smokeboxes, which serves also as a draught regulator, comprises a fixed grating composed of inclined strips b above which is a movable grating formed of angle-iron members g, the vertical flanges of which depend into the spaces between the strips b. The upper grating may be moved horizontally to adjust the passages through the gratings by means of a rod n leading to the driver's cabin, or by a steam piston.
Patent GB-184609-A (GB)
Title: Improvements in machines or apparatus for reducing or disintegrating minerals and similar materials
IPC: B02C13/18
Filed: 1921-05-28
Abstract: 184,609. Burden, A. G. N. May 28, 1921. Impact pulverizers.-Apparatus for reducing or disintegrating minerals &c. comprises a rotating disc or the like with guides, vanes, &c. to conduct the material from the central zone of the disc to its periphery whence it is thrown against a circular or annular anvil or impact ring.. A number of discs and anvils may be arranged one above the other. As shown, the material is fed by a hopper 19 on to the central part of an horizontal disc 12 mounted on a vertical shaft 3 and fitted with guides or vanes 16 having radial edges 18 which direct the material to the periphery, whence it is thrown against a circular impact-ring 21 having serrations 22 with their faces approximately at right-angles to the tangential paths of the flying particles. The ring consists of a number of segments with hookshaped projections 23 at the back to fit over the bevelled upper edge of a ring 24 secured by bolts 25 to the frame 1. The partly disintegrated material falls down a hopper 29 on to a lower disc 30 similar to the disc 12 and surrounded by an impact-ring 36. The reduced material is discharged into a receptacle arranged beneath the outlet 38 in the bottom of the receiver 11. Cover-plates 26 are provided for the discs and anvils, the lower end of the hopper 19 projecting through a hole 28 in the cover-plate of the upper disc and anvil. The shaft 3 is supported in a footstep bearing 8 and a guide 6. Wearing- plates 13, 15 and 31, 32 are provided for the discs 12, 30. The discs may be mounted to revolve in vertical or inclined planes. The machine may be arranged for treating wet material, the disc or impeller being provided with pipes &c. radiating from a central receiver into which the wet material is fed. Reference has been directed by the Comptroller to Specifications 444/76, 533/82, 5837/84, 3654/01, 25880/03, 17990/08, 29717/10, and 160,933.
Patent GB-528983-A (GB)
Title: Improvements in and relating to electrode salt bath furnaces
IPC: C21D1/46
Filed: 1939-05-18
Abstract: 528,983. Electrode furnaces. BRITISH THOMSON-HOUSTON CO., Ltd. May 18, 1939, No. 14874. Convention date, May 18, 1938. [Class 39 (iii)] In an electrode salt bath furnace the crucible consists of a metal or ceramic framework 1 which carries a rigid layer 10 of the salt to be melted, e.g., as salt bricks, which forms the crucible proper for receiving the melt. The rigid salt layer is cooled by a coil 3, and whole is surrounded by heat insulation 2. The framework 1 may consist of a metal container to which the cooling tubes 3 are welded.
Patent GB-987618-A (GB)
Title: A process for the production of homogenous or non-porous polyurethane plastics
IPC: C08G18/63
Filed: 1963-04-17
Abstract: Non-porous polyurethanes are made by reacting an organic polyisocyanate under anhydrous conditions with an intermediate product having face hydroxyl groups, said intermediate product having been prepared by mixing a polyhydric polyalkylene ether with an ethylenically unsaturated polymerizable compound and effecting polymerization of the polymerizable compound. The polyalkylene ether may be a polyalkylene ether glycol, e.g. polypropylene ether glycol having a molecular weight of 500-2000. An excess of polyisocyanate may be reacted with the modified polyether to produce a prepolymer which is then reacted with a cross-linking agent, e.g. 1,4-butane diol. Polymerizable compounds are preferably of molecular weight less than 500 and may be: styrene, ethylene, hexa 2-ene, hexa 1,4-diene, buta 1,3-diene, penta 3-ene, vinyl acetate, vinyl propionate, vinyl halides, acrylic and methacrylic acids, acrylonitrile, triallyl cyanurate and glycol dimethyl acrylate.  The polyalkylene ether is modified by dissolving the polymerizable compound in the ether, preferably in amount 1-60% and polymerizing, preferably in the absence of oxygen by an initiator, e.g. peroxide.  The modified polyether may be used alone or in admixture with other active hydrogen containing compounds, e.g. linear and branched polyesters, polyester amides, polyalkylene ethers or reaction products of amino-alcohols, diamines with alkylene oxides or carboxylic acids. Crude isocyanates may be used, and the conventional polyisocyanates are specified.  In a typical Example (1) a condensate of linear polypropylene glycol and acrylonitrile was reacted with naphthylene diisocyanate, and butane 1,4-diol was added and poured into a mould. Specification 874,130 is referred to.
Patent GB-257686-A (GB)
Title: Improvements in machines for washing, drying, and/or mixing or blending rags and other materials
IPC: D06F37/04
Filed: 1925-06-11
Abstract: 257,686. Fitton, J. June 11, 1925. Rotary mixers.- Rotary cylinder apparatus for mixing rags &c, is provided with an inwardly projecting plate c which with a hinged portion a<1> of the periphery of the cylinder, forms a hopper for charging or discharging the rags into or out of the cylinder. The rags are charged into the hopper through a hinged door a<2> which is then closed and the cylinder rotated in a clockwise direction to distribute the rags during the treatment thereof. To discharge the rags, the cylinder is rotated slowly in an anticlockwise direction so that the rags collect in the hopper from which they are discharged the the door a<1>. The plate c may be pivoted to the cylinder and connected to the door a<1> so that the opening of the door raises the plate to discharge the rags.
Patent GB-706687-A (GB)
Title: Electrical signal generating systems
Inventor: BARKER RONALD HUGH
IPC: G06F1/10
Filed: 1950-06-16
Abstract: 706,687. Code-telegraphy. MINISTER OF SUPPLY. June 20, 1951 [June 16, 1950], No. 15158/50. Class 40 (3). [Also in Groups XXXVIII and XL(c)] The invention relates to apparatus for translating a code comprising a combination of two states a, b into a 3-state code for use in the electrical transmission of information. Each signal of the 2-state code may be individually transposed into a signal in the 3-state code, or groups of signals may be transposed. In an embodiment of the first type, means for producing a positive, negative or no pulse in a line when the 2-state code changes from a to b, b to a, or does not change respectively comprises the circuit of Fig. 10, where the 2-state signals are passed through a pulse widener 100 so that successive pulses just coalesce, and are fed to differentiating circuit 101, 102 sensitive to the beginning and end respectively of each pulse, to gate a series of clock pulses fed to a transformer T. In a modification alternate positive pulses in the 2-state system are made positive and negative in the 3-state system. If the 2-state signals are in groups 2, 3 or 4 signals, e.g. a b a a, they may be encoded into groups of 2, 3 or 4 signals respectively in a 3-state system of positive, negative and zero pulses to obtain complete balance of the positive and negative pulses, e.g. - + + -. As shown, Fig. 5, for a 4 signal group, the incoming signals at 10 are taken to two gates 11, 12 of threshold 2 controlled by a trigger 3 to pass alternate groups of signals. Thus the group of 4 signals in the first period is fed through gate 11 to a staticisor comprising four triggers T1-T4 which have been reset by a beginning element 5, so that the output is set up on a tree circuit 1 of order 4, and remains on a selected lead to a gate 7. At the end of the first period, gate 7 is opened, followed by gates 13-16 which are opened in a predetermined sequence by four gates 21-24 in a ring counter, so that gates 14 and 15 produce positive pulses and gates 13 and 16 produce negative pulses in the pre-determined sequence in a transformer T. The second group of four signals at 10 passes similarly through triggers T5-T8 to a tree circuit 2, where again a predetermined 3-state code is produced in the transformer T. Specifications 717,114, and 717,115, [both in Group XIX], are referred to.
Patent GB-311775-A (GB)
Title: Process for the continuous gasification of granular or pulverulent material, such as pit coal, brown coal, coke or the like
IPC: C10J3/00
Filed: 1929-05-15
Abstract: 311,775. Kohlenveredlung Akt.-Ges., (Assignees of Feige, R.). May 16, 1928, [Convention date]. Producers.-Pulverulent or fine granular material is continuously gasified during passage together with oxygen, air and steam through parallel reaction passages formed by chequer bricks within a rotary drum f. The material passes through charging means b into the reaction passages, which comprise tubes c at the front and rear ends of the drum and passages formed by the bricks in the middle. Heating gas from a conduit k enters passages e, Fig. 2, between the reaction passages and steam is supplied through a pipe l. Water gas or other gaseous product issues through a pipe i, ash being withdrawn through a funnel g and heating gas through a pipe h. The material may be caused by the .steam to whirl or be held suspended in the passages or it may travel by gravity alone. In modifications, steam is supplied through separate nozzles or slotted pipes to the passages and may be introduced at a point in the drum some distance from the inlet. Air or oxygen may be supplied for the combustion of part of the material to provide some or all of the heat required for gasification. This and the steam supply may flow oppositely from the fuel and combustion products and may be drawn off near the charging .end. The gas composition may be varied from normal producer gas through intermediate stages to normal water gas by controlling the reaction temperature and proportioning the steam, air, or oxygen supplies which may be separately preheated.
Patent GB-257363-A (GB)
Title: Improved shuttleless power loom for duplex weaving
IPC: D03D47/00
Filed: 1925-06-11
Abstract: 257,363. Zulueta, J. de. June 11, 1925. Shedding - motions. - In a duplex vertical shuttlebox loom, the healds 6 are operated by eccentrics 19 on a shaft 18 driven by chain gearing from a shaft 13. Driving-arrangements.-The loom is driven by an electric motor though reduction gearing and a shaft 45 connected by a spring-controlled clutch 46 to the shaft 13. The clutch 46 comprises two plates having rounded projections on their engaging faces.
Patent GB-1034835-A (GB)
Title: Improvements relating to devices for centreing a solid of revolution on a given reference axis, notably for machining centres of railway rolling-stock axles
IPC: B23B49/04
Filed: 1963-04-18
Abstract: 1,034,835. Machining centres. S.A. H. ERNAULT-SOMUA. April 18, 1963 [May 9, 1962], No. 18278/63. Heading B3C. In a method of centring railway vehicle axles, Figs. 1, (2 not shown) and 3, means comprising two V-supports 3 which co-operate with the axle journals and are slidable vertically in guides 7 are adjustable vertically by screws 8 within the supports 3 which are carried on footstep bearings 12. The axis of the screws is coincident with the plane bisecting the angle of the V-support. The screw 8 is counter-bored at 16 and threaded at the upper portion 17 to carry an externally threaded sleeve 9 which is keyed to the V- support 3 to prevent its rotation but permits sliding movement. Mounted for vertical sliding movement within the sleeve 9 is a rod 10 constituting a feeler member having a contact head 15 urged upwards by a spring 14 for engagement with the journal being centred, and provided at its lower end with a bent finger 19 to engage a micro-switch 11. The relationship between the angle V of the support and the vertical movement of the sleeve 9 with the feeler head 15 relative to the vertical movement of the screw 8 is established trigonometrically and for a V-angle of 60 degrees, the thread pitch of the sleeve 9 being half the thread pitch of the screw 8. The method of centring the axle is as follows; the V-support is raised to its uppermost position with the sleeve 9 fully retracted therein, the axle journal is positioned on the support and the screw 8 is rotated to lower the support at the same time the feeler head 15 with the sleeve 9 is raised in relation to the support. When the feeler head 15 contacts the journal surface the finger 19 actuates the micro-switch 11 and the vertical movement of the support is stopped at the position required.
Patent GB-218087-A (GB)
Title: Improvements in boxes for the safe carriage of eggs
IPC: B65D85/32
Filed: 1923-06-12
Abstract: 218,087. Winzer, C. B. June 12, 1923. Fittings, intervaad.-In an egg box or frame provided with removable partitions b the eggs are held in tufts a of vegetable fibre or thin aluminum wire which project in opposite directions from adjacent partitions. In an alternative method the eggs are supported between groups of four stouter aluminium wires e, the ends f of which are bent outwards. To assist in holding the eggs in position a short length of rubber tubing g is placed over each of the wires e.
Patent GB-679460-A (GB)
Title: Improved spill burner units for continuous combustion turbine engines
IPC: F23D11/24
Filed: 1951-06-29
Abstract: 679,460. Spray burners. DOWTY EQUIPMENT, Ltd., and PEARCE, A. W. June 29, 1951, No. 15515/51. Class 75(i) In a spill burner the supply and the return tubes 12, 14 are arranged one within the other and both are disposed transversely to the burner head 11, the inner tube 14 being formed at its end as a banjc fitting 17 carrying parts 22, 23, 24 of the burner head the outer tube 12 being formed at its end as a housing 16 surrounding the banjo fitting, the parts 22, 23, 24 of the burner head and the banjo fitting 17 being clamped together and being displaceable as a whole into engagement with an abutment surface 26 on an end of the housing by means of a threaded member 36 screwed into the opposite end of the housing. The burner part 22 has a flange 25 abutting the surface 26 and has a sleeve 27 bearing against one side of the banjo fitting; the burner part 23 fits through the openings of the banjo fitting into the sleeve 27 and has a flange 28 engaging the other side of the banjo fitting; the burner part 24 extends through the part 23 and has a flange 29 engaging the flange 28. The screw member 36 is locked by a washer 39 which has a tongue 38 disposed in a channel 37 in the screw member and which has a part displaced into a notch 40 in the housing. A cap 41 screwed on to the screw member 36 is locked thereon by displacing another part of the washer into a notch 42 on the cap. The space 31 between the burner parts 22, 23, 24 constitutes a swirl chamber having tangential inlets 33 and a discharge outlet 32. The part 23 has a spill orifice 34 into which extends in spaced relationship the end of a stem 30 on the part 24; it also has a number of ports 35 communicating with the return tube 14. The upper end of the return tube 14 extends into an oversized bore 18 in an end fitting 19 screwed to the outer tube 12, a sealing ring 20 permitting limited universal movement of the inner tube relative to the outer tube.
Patent GB-905323-A (GB)
Title: Improvements in or relating to electrolytic capacitors
IPC: H01G9/042
Filed: 1960-05-03
Abstract: In a method of forming the negative member of an electrolytic capacitor a hydrogen absorbing material such as palladium, nickel or platinum black is deposited on a body of conductive material constituting the basis of the said member by an action which is solely of a chemical nature.  For example palladium may be deposited on a silver member by boiling such a member in an acidified solution of palladium chloride, or by filling a silver can with a saturated aqueous solution of palladium chloride at room temperature and allowing it to stand.
Patent GB-612371-A (GB)
Title: Pulse-shaping arrangement for a pulse-modulation wave-signal receiver
IPC: H03K5/12
Filed: 1946-05-22
Abstract: 612,371. Pulse shaping circuits. HAZELTINE CORPORATION. May 22, 1946, No. 15537. Convention date, June 1, 1945. [Class 40 (vi)] A pulse shaping circuit for a receiver of pulse modulated wave trains, the demodulated pulses of which have sloping leading and trailing edges comprises means responsive to the sloping edges from which a control potential is derived, this potential being used to interrupt the pulse signal in time coincident with and for the duration of the sloping edges and so effectively suppress them. In Fig. 1, a receiver 12 is coupled to a time delay network 13, a pulse amplifier and limiter 14 and an oscilloscope 15, and has associated with it a gain control system 17 preferably of the type which uses the quiescent or noise signal output of the receiver to stabilize the gain at some desired value and a pulse shaping control circuit 20. A demodulated pulse signal PI, curve A of Fig. 2 is applied to the phase-splitter valve 21, the outputs from the anode and cathode loads being applied to the differentiating networks 26, 27 and 28, 29 respectively. Pulses P3 and P4, curve B of Fig. 2 appear across resistor 29 having a duration equal to that of the sloping edges of pulse P1, similarly a pair of pulses of opposite polarity to P3 and P4 appear across resistor 27. By means of the full-wave rectifying circuit 30, 32, pulse P3<1>, P4<1>, curve C of Fig. 2 will be produced across resistor 31, limited at the levels e1, e2 by virtue of the bias battery 34 and are effective to interrupt the signal through limiter 14 for the duration of the sloping edges of pulse P1, thus producing an output pulse P1<1> at 16, curve D of Fig. 2, the lines E, F in curve A represent the levels between which limiter 14 operates, and line e3 in curve C the cut-off level of the limiter. Delay unit 13 in Fig. 1 ensures that there is exact coincidence in time between the suppressing action of the control signal at 33 and the occurrence of. the sloping edges of the pulse signal in limiter 14. By omitting either diode 30, 32 the shaping circuit may be used to suppress only one sloping edge of the pulse signal.
Patent GB-150121-A (GB)
Title: Improvements in carburettors
IPC: F02M9/08
Filed: 1919-06-20
Abstract: 150,121. Little, C. W. G. June 20, 1919. Spray carburettors.-A constriction is provided in the connexion between the float chamber and the fuel orifice, and air is admitted to the connexion between the constriction and the fuel orifice by a rotary valve operated in unison with a combined throttle and choke tube. The body 1 is provided with a chamber 2 open at one side to the atmosphere, and is connected to a hollow member 4 which supplies fuel from a float chamber to a lateral extension 6 of the body 1. The extension 6 is provided with a plug 5 having a restricted orifice 5a communicating with a vertical well 7 provided with a pipe 11 leading diametrically into a rotatable combined throttle and choke tube 9. The throttle 9 is provided with a sleeve 12 having a V or triangular shaped opening 14 which, when the throttle 9 is closed, registers with a duct 13 leading to the well 7. As the throttle 9 is opened with increase of load, the supply of air through the opening 14 is thus gradually cut off. An adjustable sleeve 15 having an aperture 17 and secured by a screw 16 is provided to regulate the area of the opening 14. Air, primarily for use under heavy loads, is also supplied to the duct 13 through an apertured sleeve controlled by a manually-operated needle valve. An air passage 20 controlled by an angularly-sliding plate 23 supplies air through a duct 22 to the throttle valve 9.